how can cbs do a poll of undecideds? >> we have to go to our focus group. we're almost out of time, wolf. >> let's take a closer look at the focus group of undecided colorado voters and how they reacted. we measured their reaction. the green line represents the men. the yellow line represents women in the focus group. president obama's best moment of the night. it happened near the top of the moment of the debate. talking about investments in america. listen to the president make a case in his opening statement. >> i think we've got to invest in education and training, new sources of energy in america. change the tax code to help small businesses and companies investing in the united states. that we take some of the money we're saving as we wind down two wars to rebuild america, and we reduce our deficit in a balanced way that allows us to make critical investments. >> let's take a look at one of mitt romney's best moments in the debate. peeked with both men and women at 10:16 p.m. asked about the role of government. listen to romney's high point. >> i beli